Chemical reactions can occur when sufficient is supplied to overcome the activation energy. in the lab, heating a mixture of often overcomes the activation energy. an elevation in temperature the kinetic energy of the molecules. this provides enough energy to chemical bonds. this is not feasible in living cells because a change in temperature of this type will cause the proteins to and cause cell . to assist with this problem, cells use biologically active protein catalysts called to facilitate chemical changes.

Chemical reactions can occur when sufficient heat is supplied to overcome the activation energy. In the lab, heating a mixture of substances often overcomes the activation energy. An elevation in temperature increase kinetic energy of the molecules. This provides enough energy to break chemical bonds. This is not feasible in living cells because a change in temperature of this type will cause the proteins to disintegrate and cause cell death. To assist with this problem, cells use biologically active protein catalysts called enzymes to facilitate chemical changes.

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Explanation:

Chemical reactions can occur when sufficient energy is supplied to overcome the activation energy. In the lab, heating a mixture of reactants often overcomes the activation energy. An elevation in temperature increases the kinetic energy of the molecules. This provides enough energy to break chemical bonds. This is not feasible in living cells because a change in temperature of this type will cause the proteins to denature and cause cell die . To assist with this problem, cells use biologically active protein catalysts called enzymes to facilitate chemical changes.

All the blanks have been filled with the accurate words just read through the sentences and see the correct answers written in the blanks above.

b) nuclear ive learned that in a pedtrodic table

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.